Improvement in construction



L l. BARD. Construction of Matallic'asks.

No. 137,590. A Patented Aprila,1'a73.

WITNESSES- INVENTBFL- UNITED STATES 'ATENT CFFICE.

JAMES I. BARD, OF NEW ORLEANS, LOUISIANA.

IMPROVEMENT IN CONSTRUCTION OF MTALLIC CASKS.,

Specification forming part of Letters Patent No. 137,590, dated April 8,1873; application filed September 17, 1872.

' to the accompanying illustrative drawing constituting a part of thisspecification.

My improvement relates more especially to a novel and peculiar method ofconstructing,

inserting, and securing the heads within the body of metallicbarrels orother similar vessels.

The important object which I accomplishby my improvement is theinsertion and securing of the heads to the outer shell of the saidmetallic barrels, or other equivalent vessels, without the employment ofrivets,and therefore without the necessity of perforating either theheads or the shells for the purpose of inserting the said rivets withinthe said perforations, whereby the said vessels are materially enhancedin cost of production, and are, moreover, weakened by the use of rivets.By dis-v pensing with the rivets which are at the pres ent timeuniversally employed in the construction of metallic barrels, I not onlyeconomize in the cost of production but I obtain a barrel of greateruniformity, of better appearance,

of greater strength, and with less liability to leakage than thosewherein the rivets are cmployed. l

With a view to the better understanding and appreciation of myimprovement reference must be made to the drawing whereon the same isshown at- Figure l by a perspective view, and at Fig. 2 by alongitudinal section.

As will be perceived the body or shell of the cask shown at A isconstructed with longitudinal and transverse seams b in. the usual modeof constructing metallic casks. B show'the heads, the peculiarconstruction, mode of insertion, and securing of which constitute theessential features of my improvement. These heads are constructed eachof a single piece of sheet metal cut of the proper circular form andsize to make the head desired. The sheet of met-al when thus cut isheated and stamped with a die of the proper size`to depress that `partof the said plate which is to enter within the end of the shell of thevessel to which it is to be tted. The outer portion of the said plate isthen turned down by any proper mechanical appliance so as to fit snuglyover and upon the outside of the end of the said barrel-shell. A packingof rubber, felt, or other equivalent material, as shown at c, is placedupon the chime or end of the said shell extending downwardly thereon,Vboth upon the inside as well as upon the outside thereof, as far as mayin practice be found necessary, whereupon the head already constructedor formed, as above described, is forced over the said packing and uponthe shell, as clearly shown in the drawing. A groove or indentation,`cl, is then'impressed upon and around the outside end of the barrel soas to form a corresponding ridge upon the opposite side of the chime tothe end of bringing into close contact the surfaces of the shell andhead, and thereby providing a means of eifectually preventing, under anycircumstances, the vessel from leaking the liuids therein contained, aswell, likewise, as a means of preventing the headfrom slipping from theshell of the barrel or cask to which it is fitted. For the purposes lastmentioned, should it be found essential in the practice of theinvention, more grooves than one may be employed, and I wish herewith toreserve the privilege of using one or more, as desired.

Having described my invention, what I desire to secure by Letters Patentis the following:

As an improvement in the construction of metallic casks, barrels, orother similar and equivalent vessels, the metallic head B, whenconstructed and secured to the shells of said vessels, substantially asdescribed, for the purposes set forth.

Witnesses:

H. N. JnNKrNs, J. C. HUBBELL.

JAS. I. BARD.

